10" Lead Screw Micro Focusing Rail | Arca-Swiss Compatible Slider

The Hejnar Photo 10-Inch Lead Screw Micro Focusing Rail is a professional-grade precision instrument custom-tailored for the most demanding macro photography, lab imaging, and fine alignment tasks. This linear stage features a 10-inch Arca-Swiss compatible dovetail base and a modular slider stage, offering unmatched structural stability and sub-millimeter control. Proudly CNC-machined in the USA from aircraft-grade aluminum, it is built to provide lifelong reliability for professional photographers and researchers alike.

Quick Overview & Key Features

• Precision Lead Screw Mechanism: Delivers ultra-fine focal plane adjustment of 1.06mm (0.0416 inch) travel per full revolution for critical focus plane lockup.
• Rapid Positioning Stage: Integrated manual release button allows the slider to disengage for fast, coarse framing movements before fine-tuning.
• Modular 4-Position Clamp: Top Arca-style quick release clamp can be unbolted and reoriented in 90° increments using a secure center screw and anti-twist dowel pin system.
• Extended 10" Base Track: Generous rail footprint provides an expansive platform for balancing long lenses or creating complex panoramic nodal slides.
• Universal Arca Standard: Bottom rail features a standard dovetail configuration ensuring total compatibility with quick-release clamps from RRS, Kirk, Wimberley, and Leofoto.
• Safety-First Design: Equipped with two integrated bottom safety stops to prevent your valuable camera equipment from accidentally overtraveling or sliding out of a loosened clamp.
• Exceptional Durability: Finished with a premium black hard-coat anodize for extreme resistance against scratches, scuffs, and outdoor elements.
• Professional Build Quality: Precision CNC-machined in the USA from solid 6061-T6 aircraft-grade aluminum paired with non-corrosive stainless steel hardware.

SAE Technical Specifications

• Bottom Rail Length: 10.00 inches
• Maximum Travel Distance: 6.30 inches
• Lead Screw Resolution: 0.0416 inch (1.06mm) travel per full revolution
• Material: CNC-machined 6061-T6 Aluminum
• Hardware: High-grade Stainless Steel components
• Finish: Black Hard Coat Anodized
• Horizontal Load Capacity: 15 lbs (Parallel to ground)
• Vertical Load Capacity: 10 lbs (Perpendicular to ground)

Product Description

The Hejnar Photo 10-Inch Lead Screw Micro Focusing Rail cleanly solves the challenge of managing a razor-thin depth of field in extreme macro and multi-frame focus-stacking workflows. By adjusting the working distance between the camera rig and your subject via the linear stage track rather than rotating the lens focus ring, you maintain an absolutely constant magnification ratio. This geometric consistency is a critical factor for clean, artifact-free image alignment during post-processing software stacking.

This system is engineered for complete technical versatility. The extended 10-inch base rail provides an expansive platform that is highly useful for counter-balancing heavy telephoto lenses or configuring precise pan-nodal slides. The slider stage features a modular quick release clamp that can be quickly rotated to face any of the four cardinal directions, allowing you to align your camera body, lens foot, or vertical L-bracket exactly how the composition requires. Whether configured flat for horizontal tabletop setups or mounted at a vertical 90° angle on a copy stand for top-down captures, the rail remains entirely rigid and immune to sagging.

Craftsmanship is paramount in this assembly; every component is CNC-milled from premium solid aluminum and features rugged stainless steel driving hardware. The hand-cranked lead screw provides silky-smooth, repeatable travel along the track, while the manual slide release button ensures you do not waste time turning the handle for long-distance positional adjustments. Built to endure severe field and studio use, this USA-made focusing rail delivers the rock-solid tracking performance your professional imaging demands.